C3 V»/ X XZrf X^ \^ XL 



Editorial Committee : S. Newcomb, Mathematics ; E. S. "Woodwaed, Mechanics ; E. C. Pickeeino, 



Astronomy ; T. C- Mendenhall, Physics ; R. H. Thueston, Engineering ; Iea Eemsen, Chemistry ; 



Joseph Le Conte, Geology ; W. M. Davis, Physiography ; Henky F. Osbobn, Paleontology ; 



W. K. Beooks, C. Haet Mbeeiam, Zoology ; S. H. Scuddee, Entomology ; C. E. Bessey, 



N. L. Brixton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bowditch, 



Physiology ; J. S. Billings, Hygiene ; William H. Welch, Pathology ; 



J. McKeen Cattell, Psychology ; J. W. Powell, Anthropology. 



Friday, July 20, 1900. 



CONTE^^TS.■ 

 The American Association for the Advancement of 

 Science: — 



Pre-Cambrian Sediments in the Adirondachs : 



Peofessor J. F. Kemp 81 



On Kathode Bays and some related Phenomena 



(II): Peofessoe Ernest Meeeitt 98 



Mathematics and Astronomy : Dr. Wendell M. 



Strong 104 



Physics: De. R. A. Fessenden 106 



Scientific Books :' — 



Wilson on the Cell in Development and Inheri- 

 tance: Professor Edwin G. Conklin. 

 Bruncken on North American Forests and For- 

 estry ; Rydberg's Catalogue of the Flora of 3Ion- 

 tana and the Yellowstone National Park : PRO- 

 FESSOR Charles E. Bessey. True on Agri- 

 cultural Experiment Stations: De. E. W. Allen. 109 



Scientific Journals and Articles 113 



Discussion and Correspondence : — 



Tlie International Catalogue of Scientific Litera- 

 ture: Peofessoe Heney F. Osboen. Tlie 

 Callosities on Horses' Legs: LAWRENCE lEWELL. 

 Transmissibility of Acquired Characters : C. G. S. 113 



Current Notes on Meteorology : — 

 Report of the Chief of the Weather Bureau ; Hie 

 Aurora Ausiralis : Peofessoe R. DeC. Waed.. 114 



Notes on Oceanography : — 



The Danish ' Ingolf Expedition '; Currents in the 

 North Sea ; The Gulf Stream Drift ; Hydrography 

 and Faunas of Spitzbergen Coast- Waters : Dr. 

 Reginald A. Daly 114 



A New Star inAquila : PROFESSOR E. C. Picker- 

 ing 116 



27(6 Establishment of a Bureau of Chemistry 116 



Scientific Notes and Neios 116 



University and Educational News 120 



MSS. intended for publication and books, etc., intended 

 for rcTiew should be sent to ttie responsible editor, Profes- 

 sor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



PRE-CAMBRIAN SEDI3IENTS IN THE ADIRON- 

 DACKS* 

 contents. 

 Introduction, the rise of stratigraphioal geology. 



Its gradual application to the pre-Cambrian strata. 

 The Adirondacks outlined, geographically and geo- 

 logically. 



Work of C. H. Smyth, Jr., H. P. Gushing and 

 the writer. 

 The Varieties of Sedimentary Rocks. 



The Limestones. 



The Quartzites. 



Minor Associates of the Limestones. 



The Sedimentary Gneisses. 

 General Distribution of the MetamorphosedSediments. 



The Northwest. 



The Eastern Side. 



Resume. 

 Typical Stratigraphioal Cross-sections- 



Catamount Mountain. 



The Western Spur of Whiteface. 



The Lewis Section of Quartzite. 



Limekiln Mountain. 



Styles Brook Section in Southern Jay. 

 The Significance of Graphite. 

 Conclusion. 



Stratigrapliical geology had its rise in 

 those old mining regions of Germany, the 

 * Address of the Vice-President and Chairman of 

 Section E of the American .Association for the Ad- 

 vancement of Science, given at the New York meet- 

 ing, June, 1900. 



The field work on which the above paper is based 

 was done under both the U. S. Geological Survey and 

 the New York State Geological Survey. All the data 

 under the authority of the latter and here drawn 

 upon have been printed. For permission to use 

 much unpublished matter belonging to the former 

 acknowledgments are here respectfully made to the 

 Hon. Charles D. Walcott, Director. 



